package cn.wolfcode.wolf2w.interceptor;


import cn.wolfcode.wolf2w.annotation.RequireLogin;
import cn.wolfcode.wolf2w.domain.UserInfo;
import cn.wolfcode.wolf2w.redis.service.IUserInfoRedisService;
import cn.wolfcode.wolf2w.util.JsonResult;
import com.alibaba.fastjson.JSON;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CheckLoginInterceptor implements HandlerInterceptor {
	@Autowired
	private IUserInfoRedisService userInfoRedisService;

	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

		if(!(handler instanceof HandlerMethod)){
			return true;
		}
		HandlerMethod hm = (HandlerMethod) handler;

		String token = request.getHeader("token");
		UserInfo user = userInfoRedisService.getUserByToken(token);

		if(hm.hasMethodAnnotation(RequireLogin.class)){
			if(user == null){
				response.setContentType("application/json;charset=utf-8");
				response.getWriter().write(JSON.toJSONString(JsonResult.noLogin()));
				return false;
			}
		}
		return true;
	}
}
